Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  edd9d6958a7b7607d00badb3e35ef04df486d6b7

automatically include ask extension if available

Ask extension is required in experimental mode right now, so we include it, if its there.
Currently, all tests are failing with experimental mode enabled if the ask extension is not enabled.

Change-Id: I94e89333d5bc1ee6f6e8d698ef67f354a83a6c3a